Perko's black polymer with gasket fuel system locking cap for 1-1/2" non-vented fills. Other specifications include built in lock cylinder with cover for key hole, and cap outside thread diameter of 1-7/8". Country of Origin: United States Package quantity: 1 Product type: Auto_Accessory Package dimensions: 4.445 cmsLx7.62 cmsWx13.97 cmsH MODEL NO - 3004.4733